Ask HN: Have you seen your Palantir file?
No, my jaw dropped when I was shown a demo, from an acquaintance, of LexusNexus many years ago, I can only imagine how much worse Palantir is
How does one view their file? Is this even possible?
Data brokers and government records.
No, you can't except under limited circumstances. In America, data about you is largely confidential property of others that can be resold without your knowledge or consent. It likely includes errors and erroneous assumptions, but there's little or no recourse because of decades of legislative, legal, and regulatory capture because of bribes given and patronage bought by the ultra rich who still aren't satisfied with the lion's share of everything.
Depending on what you saw, Lexis-Nexis was very detailed and until the late 1990s, was not well audited - which meant that things like PTRAK did not have much governance to its use.